Perhaps you should try some spelling variations:
practices services » practices service, practice services, practice service
learning processes » learning process
nursing practices » nursing practice, nursing practical, farming practices

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: "((\"sociology AND nursing practices services\") or (\"sociology AND ((nursing practices) OR (((learning practices) OR (learning processes)))) service\"))".
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((\\"sociology and nursing practices services\\") or (\\"sociology and ((nursing practices) or (((learning practices) OR (learning processes)))) service\\"))\"".
• Removing quotes may allow a broader search: (( sociology and nursing practices services ) or ( sociology and ((nursing practices) or (((learning practices) OR (learning processes)))) service )).